Mother says to her son, "Honey, I appreciate you expressing your desire to have sex with me, but I'm your mother. That would be wrong. Also, you would tell your friends what we did. That would be embarrassing and something that I would most likely regret for the rest of my life."
Son replies, "Mom, I won't tell anybody. I promise."
Mother says, "Well, I guess that we can have sex, but only this one time. I feel that if I turn you down then there would be resentment on your part and I don't want anything to come between our loving relationship. You must promise though that we will never discuss what we did. It will be a secret just between you and me."
Son replies, "Okay."
Mother says, "I don't know if we should be doing this. Maybe we should stop."
Son says, "Mom, I have been wanting to see your naked breasts for years. You walk around the house all the time without a bra and it's been driving me crazy. To see them now and touch them is a dream come true. You tits are awesome. They are spectacular."
Mother replies, "Thank you honey."
Mother says, "Honey, you used to do the same thing eighteen years ago."
Mother says, "Well, let's get started. The first thing we have to do is take off our clothes. I will help you."